CN106739677B - A kind of mathematical education blackboard - Google Patents
A kind of mathematical education blackboard Download PDFInfo
- Publication number
- CN106739677B CN106739677B CN201710143506.1A CN201710143506A CN106739677B CN 106739677 B CN106739677 B CN 106739677B CN 201710143506 A CN201710143506 A CN 201710143506A CN 106739677 B CN106739677 B CN 106739677B
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- CN
- China
- Prior art keywords
- vertical bar
- blackboard
- bar
- chalk
- cross bar
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L1/00—Repeatedly-usable boards or tablets for writing or drawing
- B43L1/04—Blackboards
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L13/00—Drawing instruments, or writing or drawing appliances or accessories not otherwise provided for
- B43L13/001—Mathematical drawing instruments
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L21/00—Blackboard or slate cleaning devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L9/00—Circular curve-drawing or like instruments
- B43L9/007—Circular curve-drawing or like instruments with perforated or marked rulers
Landscapes
- Drawing Aids And Blackboards (AREA)
Abstract
The invention belongs to teaching aid technical fields, provide a kind of mathematical education blackboard, including blackboard, two sides are equipped with track to blackboard up and down, across equipped with the first vertical bar and the second vertical bar being slidably connected with it between two tracks, second vertical bar can circumferentially rotate, sliding is equipped with the picture circle cross bar and setting-out cross bar that can be rotated up and down on first vertical bar, it draws circle cross bar and is equipped with chalk fixed frame, sliding is equipped with the auxiliary setting-out cross bar that can be rotated up and down on second vertical bar, is located at the opposite side of setting-out cross bar on the second vertical bar and is equipped with blackboard eraser；First vertical bar is Telescopic rod structure, and its both ends is articulated with its being slidably connected in portion between track.Vertical bar slot is provided at left and right sides of blackboard.Mathematical education blackboard provided by the invention occupies little space, is easy to use, teacher is allowed to be not required to carry cumbersome drawing tool, and it is more accurate that blackboard is drawn, and blackboard-cleaning is more convenient.
Description
Technical field
The invention belongs to teaching aid technical field more particularly to a kind of mathematical education blackboards.
Background technique
Need to draw a large amount of geometry drawing during high school mathematics teaching, and it is present, and mathematics teacher needs when drawing
Carry the teaching aid for drawing such as set square, compasses, it has not been convenient to carry and draw not accurate enough；During teaching of senior high school, knowledge quantity
Greatly, write on blackboard it is more, wiping blackboard it is more frequent, chalk powder does not allow easy to clean.
Summary of the invention
The technical problems to be solved by the present invention are: in view of the deficienciess of the prior art, provide it is a kind of it is easy to operate, draw
Figure is accurate, wipes the quick mathematical education blackboard of blackboard.
In order to solve the above technical problems, the technical scheme is that a kind of mathematical education blackboard, including blackboard, it is special
Sign is: the two sides up and down of the blackboard are symmetrically arranged with the track being laterally extended, across being equipped with first between two tracks
The both ends of vertical bar and the second vertical bar, first vertical bar and second vertical bar are slideably positioned in respectively in the track, described
Scale is respectively marked on first vertical bar and second vertical bar, sliding is equipped with first longitudinal direction sliding block and second and indulges on first vertical bar
To sliding block, it is rotatably connected to first angle dial plate on the first longitudinal direction sliding block, is rotatably connected on the second longitudinal direction sliding block
Second angle dial plate, the first angle dial plate are equipped with picture circle cross bar, and the second angle dial plate is equipped with setting-out cross bar；
Second vertical bar can be circumferentially rotated along it, and sliding is equipped with third longitudinal sliding block on second vertical bar, and described the
Rotation, which is equipped with, on three longitudinal sliding blocks assists setting-out cross bar, and the side opposite with the third longitudinal sliding block is set on second vertical bar
There is the blackboard eraser of the length direction extension along second vertical bar；
Scale, the picture circle cross bar are respectively marked on the picture circle cross bar, auxiliary setting-out cross bar and the setting-out cross bar
It is equipped with elongated hole slot and chalk fixed frame, the chalk fixed frame includes bush of chalk, is provided with above the bush of chalk
Spring compressor, the bush of chalk top are provided with chalk fastening screw, and the bush of chalk passes through the elongated hole slot, described
The bush of chalk part above elongated hole slot is arranged with upper support frame, the bush of chalk below the elongated hole slot
Part is arranged with lower bracing frame, and pointer is provided on the upper support frame, twists on the upper support frame and is equipped with support frame fastening spiral shell
Nail, support frame as described above fastening screw inner end act against on the upper surface for drawing circle cross bar.
Preferably, it is provided on the first longitudinal direction sliding block, the second longitudinal direction sliding block and the third longitudinal sliding block
For self-locking spring fixed clamp, the both ends of first vertical bar and second vertical bar are equipped with transverse slider, and described second
The both ends of vertical bar be rotatably dispose in respectively with its corresponding to the transverse slider on, transverse slider sliding is set to the rail
In road, it is also equipped on the transverse slider for the self-locking spring fixed clamp；First vertical bar is Telescopic rod structure,
Two outer ends of first vertical bar are hingedly set on the transverse slider corresponding thereto.
Preferably, second vertical bar and the blackboard eraser are Detachable connection structure, are set at left and right sides of the blackboard
It is equipped with the vertical bar slot for storing first vertical bar and second vertical bar.
Preferably, detachable chalk powder collecting tank is provided with below the track on the downside of the blackboard.
By adopting the above-described technical solution, the beneficial effects of the present invention are:
Mathematical education blackboard provided by the invention, the first vertical bar and second crossbar and track are slidably connected, the first vertical bar
It can horizontally slip with the second vertical bar, can be used for drawing vertical line；The sliding block to draw lines on cross bar and picture circle cross bar and the first vertical bar
Rotation connection, sliding block is slidably connected and the first vertical bar, and setting-out cross bar can move up and down and rotate, for drawing horizontal line and tiltedly
Line；Drawing circle cross bar can slide up and down, for drawing camber line and circle.The sliding block being equipped with is slided on second vertical bar, is rotated on sliding block
The auxiliary setting-out cross bar being equipped with, auxiliary setting-out cross bar can move up and down and rotate, and auxiliary setting-out cross bar is drawn.
The angle dial plate being rotatablely connected on first vertical bar can accurately determine streak-inclined angle and camber line angle；It is horizontal to draw circle
Chalk fixed frame on bar facilitates the drafting of circular arc, and the spring compressor of chalk fixed frame can be by chalk outwardly against convenient for drawing
Drawing shape, pointer observe size scale when facilitating drawing, chalk fixing screws can prevent chalk from falling off, the branch on upper support frame
Support fastening screw can prevent the sliding of the chalk fixed frame in drawing course；Blackboard eraser on second vertical bar, the second vertical bar
Along its circumferentially rotate after can be used for wiping blackboard, it is more convenient.
Setting-out cross bar, auxiliary setting-out cross bar and draw circle cross bar be rotation connection, by cross bar and draw circle cross bar turn to it is perpendicular
Histogram is to can reduce its occupancy to blackboard writing space.
Spring fixed clamp on first longitudinal direction sliding block, second longitudinal direction longitudinal sliding block, third longitudinal sliding block and transverse slider can
To prevent setting-out cross bar, auxiliary setting-out cross bar, draw the sliding of circle cross bar, the first vertical bar and the second vertical bar in drawing course.The
The retractable structure of the articulated connection of transverse slider in two outer ends and track of one vertical bar, the first vertical bar can be solid with spring
Clamp fixes one end of the first vertical bar, and the other end of the first vertical bar is mobile, makes the first vertical bar for Oblique line drawing and measurement
Angle.The vertical bar slot being arranged at left and right sides of blackboard can be horizontal by setting-out in the case where the first vertical bar and the second vertical bar are not used
It bar, auxiliary setting-out cross bar and draws circle cross bar and rotates to vertical, the first vertical bar and the second vertical bar are slid into vertical bar slot and concealed, is prevented
Only it blocks sight and occupies blackboard layout space.
The detachable structure of second vertical bar and blackboard eraser facilitates the replacement of blackboard eraser.The detachable powder being arranged below track
The last collecting tank of pen facilitates the cleaning of chalk powder, reduces pollution of the chalk powder to ground.
Mathematical education blackboard provided by the invention occupies little space, is easy to use, teacher is allowed to be not required to carry cumbersome drawing
Tool, it is more accurate that blackboard is drawn, and blackboard-cleaning is more convenient.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of mathematical education blackboard provided in an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of the picture circle cross bar of mathematical education blackboard shown in FIG. 1；
Fig. 3 is the structural schematic diagram of the chalk fixed frame of the picture circle cross bar of mathematical education blackboard shown in Fig. 2；
Fig. 4 is the second vertical bar and auxiliary setting-out lateral rod mounting construction schematic cross-sectional view of mathematical education blackboard shown in FIG. 1；
Fig. 5 is the track and the second vertical bar schematic diagram of the installation structure of mathematical education blackboard shown in FIG. 1；
Fig. 6 is the track and the first vertical bar schematic diagram of the installation structure of mathematical education blackboard shown in FIG. 1；
In figure: 1- blackboard, 2- track, the detachable chalk powder collecting tank of 3-, 4- vertical bar slot, the first vertical bar of 5-, 6- second are perpendicular
Bar, 7- setting-out cross bar, 8- auxiliary setting-out cross bar, 9- draw circle cross bar, 101- first angle dial plate, 102- second angle dial plate, 11-
Elongated hole slot, 12- chalk fixed frame, 13- bush of chalk, 14- spring compressor, 151- upper support frame, 152- lower bracing frame, 16- refer to
Needle, 171- chalk fastening screw, 172- support frame fastening screw, 18- chalk, 19- spring fixed clamp, 20- third longitudinal sliding block,
21- blackboard eraser, 22- track groove, 23- transverse slider.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Fig. 1 to Fig. 6 collectively illustrates the structural schematic diagram of mathematical education blackboard provided in an embodiment of the present invention, for the ease of
Illustrate, this figure only provides structure division related to the present invention.
A kind of mathematical education blackboard, including blackboard 1, about 1 two sides of blackboard are symmetrically arranged with the track 2 being laterally extended, and two
Across the first vertical bar 5 and the second vertical bar 6 is equipped between a track 2, the both ends of the first vertical bar 5 and the second vertical bar 6 are slided respectively to be set
It is placed in track 2, the first vertical bar and the second vertical bar can horizontally slip, and can be used for drawing vertical line；First vertical bar 5 and second is perpendicular
It is respectively marked with scale on bar 6, is slided on the first vertical bar 5 and is equipped with first longitudinal direction sliding block and second longitudinal direction sliding block, on first longitudinal direction sliding block
It is rotatably connected to first angle dial plate 101, second angle dial plate 102 is rotatably connected on second longitudinal direction sliding block, angle dial plate can
Accurately to determine streak-inclined angle and camber line angle；First angle dial plate 101 is equipped with picture circle cross bar 9, and drawing circle cross bar can be with
It rotates and slides up and down, for drawing camber line and circle；Second angle dial plate 102 be equipped with setting-out cross bar 7, setting-out cross bar can more than
Lower movement and rotation, for drawing horizontal line and oblique line.
Second vertical bar 6 can be circumferentially rotated along it, and sliding is equipped with third longitudinal sliding block 20 on the second vertical bar 6, and third is longitudinally sliding
On block 20 rotation be equipped with auxiliary setting-out cross bar 8, auxiliary setting-out cross bar can move up and down and rotate, for assist draw horizontal line and
Oblique line；The side opposite with the third longitudinal sliding block 20 is equipped with the length direction extension along the second vertical bar 6 on second vertical bar 6
Blackboard eraser 21, the blackboard eraser on the second vertical bar, the second vertical bar along its circumferentially rotate after can be used for wiping blackboard, it is more convenient fast
It is prompt.
It draws and is respectively marked with scale on circle cross bar 9, setting-out cross bar 7 and auxiliary setting-out cross bar 8, draw circle cross bar 9 and be equipped with elongated hole
Slot 11 and chalk fixed frame 12, chalk fixed frame facilitate the drafting of circular arc；Chalk fixed frame 12 includes bush of chalk 13, chalk
Sleeve 13 is provided with spring compressor 14 above, and spring compressor can be by chalk outwardly against convenient for graphing；13 top of bush of chalk
It is provided with chalk fastening screw 171, bush of chalk 13 passes through elongated hole slot 11, the bush of chalk 13 on elongated hole slot 11
Part is equipped with upper support frame 151, and the part of the bush of chalk 13 below elongated hole slot 11 is equipped with lower bracing frame 152, upper support
Pointer 16 is provided on 13 on frame, pointer observes size scale when facilitating drawing；It is twisted on upper support frame 151 tight equipped with support frame
Gu screw 172,172 inner end of support frame fastening screw is acted against on the upper surface of picture circle cross bar 9, and support frame fastening screw can be to prevent
Only in drawing course chalk fixed frame sliding.
It is provided on first longitudinal direction sliding block, second longitudinal direction sliding block and third longitudinal sliding block 20 and is fixed for self-locking spring
The both ends of folder 19, the first vertical bar 5 and the second vertical bar 6 are equipped with transverse slider 23, and the both ends of the second vertical bar 6 are rotatably dispose in respectively
With its corresponding to transverse slider 23 on, the sliding of transverse slider 23 is set in track 2, is also equipped on transverse slider 23 for solid
Determine the spring fixed clamp 19 of transverse slider 23, spring fixed clamp 19 is the elastic-buckle structure being fixed on sliding block, and spring is fixed
Folder 19 in the on-state, removable movable slider, under locking state, can anti-limited slip block sliding, prevent setting-out cross bar 7, auxiliary
Draw lines the sliding of cross bar 8, picture circle cross bar 9, the first vertical bar 5 and the second vertical bar 6 in drawing course；First vertical bar 5 is set rod-type
Two outer ends of Telescopic rod structure, the first vertical bar 5 are hingedly set on transverse slider 23 corresponding thereto, with spring fixed clamp 9
The one end for fixing the first vertical bar 5, the other end of the first vertical bar 5 is mobile, the first vertical bar 5 is tilted, can be used to Oblique line drawing
And measurement angle.
Second vertical bar 6 and blackboard eraser 21 are Detachable connection structure, the detachable structure side of the second vertical bar 6 and blackboard eraser 21
Blackboard eraser 21 replacement；The left and right sides of blackboard 1 is provided with the vertical bar slot for storing the first vertical bar 5 and the second vertical bar 6
4, the vertical bar slot 4 that the blackboard left and right sides is arranged can be horizontal by setting-out in the case where the first vertical bar 5 and the second vertical bar 6 are not used
Then bar 7, auxiliary setting-out cross bar 8 and the picture circle rotation of cross bar 9 slide into the first vertical bar 5 and the second vertical bar 6 perpendicular to vertical state
It is concealed in bar slot 4, prevents it from blocking sight and occupy blackboard layout space.
It is provided with detachable chalk powder collecting tank 3 below the track 2 of 1 downside of blackboard, is arranged below track 2 detachable
Chalk powder collecting tank 3 facilitates the cleaning of chalk powder, reduces pollution of the chalk powder to ground.
Mathematical education blackboard provided by the invention occupies little space, is easy to use, teacher is allowed to be not required to carry cumbersome drawing
Tool, it is more accurate that blackboard is drawn, and blackboard-cleaning is more convenient.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (4)
1. a kind of mathematical education blackboard, including blackboard, it is characterised in that: the two sides up and down of the blackboard, which are symmetrically arranged with, to be laterally extended
Track, across being equipped with the first vertical bar and the second vertical bar, first vertical bar and second vertical bar between two tracks
Both ends be slideably positioned in the track respectively, be respectively marked with scale on first vertical bar and second vertical bar, described
Sliding is equipped with first longitudinal direction sliding block and second longitudinal direction sliding block on one vertical bar, and rotation is equipped with first angle on the first longitudinal direction sliding block
Dial plate is rotatably connected to second angle dial plate on the second longitudinal direction sliding block, and the first angle dial plate is equipped with picture circle cross bar,
The second angle dial plate is equipped with setting-out cross bar；
Second vertical bar can be circumferentially rotated along it, and sliding is equipped with third longitudinal sliding block on second vertical bar, and the third is vertical
Rotation, which is equipped with, on sliding block assists setting-out cross bar, and the side opposite with the third longitudinal sliding block is equipped with edge on second vertical bar
The blackboard eraser that the length direction of second vertical bar extends；
It is respectively marked with scale on the picture circle cross bar, auxiliary setting-out cross bar and the setting-out cross bar, is set on the picture circle cross bar
There are elongated hole slot and chalk fixed frame, the chalk fixed frame includes bush of chalk, is provided with spring above the bush of chalk
Cap, the bush of chalk top are provided with chalk fastening screw, and the bush of chalk passes through the elongated hole slot, described elongated
The bush of chalk part above hole slot is arranged with upper support frame, the bush of chalk part below the elongated hole slot
It is arranged with lower bracing frame, pointer is provided on the upper support frame, is twisted on the upper support frame and is equipped with support frame fastening screw, institute
Support frame fastening screw inner end is stated to act against on the upper surface for drawing circle cross bar.
2. mathematical education blackboard as described in claim 1, it is characterised in that: the first longitudinal direction sliding block, the second longitudinal direction
It is provided on sliding block and the third longitudinal sliding block for self-locking spring fixed clamp, first vertical bar and described second erects
The both ends of bar are equipped with transverse slider, the both ends of second vertical bar be rotatably dispose in respectively with its corresponding to it is described laterally sliding
On block, the transverse slider sliding is set in the track, is also equipped on the transverse slider for the self-locking spring
Fixing clamp；First vertical bar is Telescopic rod structure, and two outer ends of first vertical bar are hingedly set to institute corresponding thereto
It states on transverse slider.
3. mathematical education blackboard as claimed in claim 2, it is characterised in that: second vertical bar and the blackboard eraser are removable
Connection structure is unloaded, the vertical bar for storing first vertical bar and second vertical bar is provided at left and right sides of the blackboard
Slot.
4. mathematical education blackboard as claimed in claim 2, it is characterised in that: set below the track on the downside of the blackboard
It is equipped with detachable chalk powder collecting tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710143506.1A CN106739677B (en) | 2017-03-11 | 2017-03-11 | A kind of mathematical education blackboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710143506.1A CN106739677B (en) | 2017-03-11 | 2017-03-11 | A kind of mathematical education blackboard |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106739677A CN106739677A (en) | 2017-05-31 |
| CN106739677B true CN106739677B (en) | 2019-01-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710143506.1A Active CN106739677B (en) | 2017-03-11 | 2017-03-11 | A kind of mathematical education blackboard |
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| Country | Link |
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| CN (1) | CN106739677B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107718955A (en) * | 2017-08-31 | 2018-02-23 | 邹先微 | A kind of diagonal scale |
| CN107718947A (en) * | 2017-08-31 | 2018-02-23 | 邹先微 | A kind of multi-functional blackboard |
| CN110877492A (en) * | 2018-09-06 | 2020-03-13 | 邯郸学院 | Device for drawing mathematical graph |
| CN109177600A (en) * | 2018-11-01 | 2019-01-11 | 王冠涵 | The blackboard of included drawing tool |
| CN112606596A (en) * | 2020-12-24 | 2021-04-06 | 青岛黄海学院 | Special multi-functional plotter of mathematics such as university height |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1048821A (en) * | 1989-07-18 | 1991-01-30 | 曾德邻 | A kind ofly write, the fully automatic blackboard of drawing, sound picture unification |
| JP2005225142A (en) * | 2004-02-13 | 2005-08-25 | Ricoh Elemex Corp | Writing device |
| CN201380685Y (en) * | 2009-02-09 | 2010-01-13 | 龚志平 | Blackboard geometric figure drawing ruler |
| MX2010006704A (en) * | 2010-06-03 | 2010-11-25 | Jose Luis Del Socorro Davila Aviles | Mathematics didactic board. |
| CN203762547U (en) * | 2014-03-11 | 2014-08-13 | 王怀志 | Multifunctional special mathematics teaching frame |
| CN204382947U (en) * | 2015-01-29 | 2015-06-10 | 杨国栋 | A kind of for mathematical education mapping blackboard |
| CN204432121U (en) * | 2015-03-17 | 2015-07-01 | 王耀文 | Mathematical education servicing unit |
| CN204701328U (en) * | 2015-05-05 | 2015-10-14 | 河北工程技术高等专科学校 | A kind of mathematical education blackboard |
| CN204701331U (en) * | 2015-06-08 | 2015-10-14 | 王景红 | A kind of mathematical education blackboard |
| CN205272954U (en) * | 2015-11-30 | 2016-06-01 | 李树刚 | Blackboard for mathematics teaching |
| CN205381058U (en) * | 2015-12-17 | 2016-07-13 | 王秀梅 | Multifunctional blackboard is used in teaching |
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2017
- 2017-03-11 CN CN201710143506.1A patent/CN106739677B/en active Active
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| CN106739677A (en) | 2017-05-31 |
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Effective date of registration: 20180704 Address after: 102600 3 floor, 2 building, No. 4 Daxing District Garden Road, Beijing, 1 unit 317 Applicant after: BEIJING ZHITOUJIA INTELLECTUAL PROPERTY OPERATION CO.,LTD. Address before: 277800 Shandong province Zaozhuang Zaozhuang High-tech Zone Fuyuan three road intelligent manufacturing town 206 room Applicant before: ZAOZHUANG PANGU PRECISION MACHINERY TECHNOLOGY CO.,LTD. |
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Effective date of registration: 20181114 Address after: 325100 Xiaojing Ao, Qiao Xia Town, Yongjia County, Wenzhou, Zhejiang Applicant after: Kanglong World Amusement Co.,Ltd. Address before: 102600 3 floor, 2 building, No. 4 Daxing District Garden Road, Beijing, 1 unit 317 Applicant before: BEIJING ZHITOUJIA INTELLECTUAL PROPERTY OPERATION CO.,LTD. |
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Denomination of invention: A Kind of Mathematics Teaching Blackboard Effective date of registration: 20230602 Granted publication date: 20190101 Pledgee: Agricultural Bank of China Limited Yongjia County sub branch Pledgor: Kanglong World Amusement Co.,Ltd. Registration number: Y2023330001056 |